Also quite a bit more awkward.
RH was on a trajectory to decently compete with VMware as a decent virtualization platform on technical merit, but I think they found VMware being first meant there wasn't much interest in changing.
So they ditched RHEV and chased "cloud" with open stack... Except open stack was never that great, and the demand for a fully realized on premise "cloud" didn't follow from off premise cloud anyway...
So red hat changed to openshift and kind of sort of shoehorned VMs awkwardly to provide some whiff of continuity to customers otherwise abandoned for trying to adopt RHEV or Open Stack from red hat.
Proxmox I think it's on the best position for providing the old fashioned VMware user experience now (in some ways better).